14 August 2013, 17:48
This is largely dependant on how long you can keep your CO2 or Compressed Air canister filled. Compressed air is going to be easier to fill, but you need to really look after the bottle. Damaged Air canisters can explode very well!!!
Dissent is the highest form of Patriotism - Thomas Jefferson
Those who sacrifice freedom for security deserve neither - Benjamin Franklin
Those who sacrifice freedom for security deserve neither - Benjamin Franklin